title: ep_自定义注解实现加解密及脱敏
date: 2020-04-28 09:44
定义自定义注解
@Documented
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Order(Ordered.HIGHEST_PRECEDENCE)
public @interface PrivateData {
}
@Documented
@Target({ElementType.METHOD})
@Retention(RetentionPolicy.RUNTIME)
@Order(Ordered.HIGHEST_PRECEDENCE)
public @interface PrivateDataMethod {
}
首先定义两个自定义注解,privateData
和privateDataMethod
,分别将@Target属性定义为FIELD和METHOD。
构造AOP逻辑
- 申明一个切入点
@Pointcut("@annotation(com.max.base.services.annotation.PrivateDataMethod)")
public void annotationPointCut() {
}
对所有添加@privateDataMethod
注解的方法进行切入。
- 申明通知
@Around("annotationPointCut()")
public Object around(ProceedingJoinPoint joinPoint) {
Object responseObj = null;
try {
Object[] request = joinPoint.getArgs();
for (Object object : request) {
if (object instanceof Collection) {
Collection collection = (Collection) object;
collection.forEach(var -> {
try {
handleEncrypt(var);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
});
} else {
handleEncrypt(object);
}
}
responseObj = joinPoint.proceed();
if (responseObj instanceof Collection) {
Collection collection = (Collection) responseObj;
collection.forEach(var -> {
try {
handleDecrypt(var);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
});
} else {
handleDecrypt(responseObj);
}
} catch (Throwable throwable) {
throwable.printStackTrace();
log.error("SecureFieldAop 异常{}", throwable);
}
return responseObj;
}
申明Aroud通知,对于方法输入输出的对象进行判断,如果是非集合对象则直接进行加解密操作,否则则拆分集合,逐一操作
- 处理加解密
/**
* 处理加密
* @param requestObj
*/
private void handleEncrypt(Object requestObj) throws IllegalAccessException {
if (Objects.isNull(requestObj)) {
return;
}
Field[] fields = requestObj.getClass().getDeclaredFields();
for (Field field : fields) {
boolean hasSecureField = field.isAnnotationPresent(PrivateData.class);
if (hasSecureField) {
Boolean accessible = field.isAccessible();
if (!accessible) {
field.setAccessible(true);
}
String plaintextValue = (String) field.get(requestObj);
String encryptValue = AseUtil.encrypt(plaintextValue, secretKey);
field.set(requestObj, encryptValue);
if (!accessible) {
field.setAccessible(false);
}
}
}
}
通过反射获取对象的Field列表,对于拥有@PrivateData
注解的字段执行encryptValue()方法并用加密后的字符串覆盖原字段。
解密逻辑与加密类似,不做赘述。
测试
- 标识
insert()
方法为需要加密的方法
public interface CmTenantMapper {
int deleteByPrimaryKey(Long id);
@PrivateDataMethod
int insert(CmTenant record);
int insertSelective(CmTenant record);
CmTenant selectByPrimaryKey(Long id);
int updateByPrimaryKeySelective(CmTenant record);
int updateByPrimaryKey(CmTenant record);
}
- 对传入对象中需要加密的字段添加注解
public class CmTenant {
private Long id;
private String tenantId;
@PrivateData
private String tenantName;
private String createBy;
private Date createDate;
private String updateBy;
private Date updateDate;
private String remarks;
private Byte delFlag;
//set get...
- 调用insert方法查看数据保存结果
传入对象
{
"createBy": "可乐可不乐",
"delFlag": "NOTDELETE",
"remarks": "测试加密",
"tenantId": "996",
"tenantName": "椅子团队出品",
"updateBy": "可乐可不乐"
}
数据库保存对象
- 解密测试不做注释,大家自行尝试
脱敏逻辑
脱敏逻辑与加解密基本一致,需要注意的一点是脱敏的注解需要添加type
类型
@Documented
@Target({ElementType.FIELD})
@Retention(RetentionPolicy.RUNTIME)
@Order(Ordered.HIGHEST_PRECEDENCE)
public @interface MaskingField {
MaskingTypeEnum type();
}
在MaskingTypeEnum
中定义脱敏的分类
public enum MaskingTypeEnum {
/*身份证号码*/
ID_CARD,
/*手机号码*/
PHONE,
/*地址*/
ADDRESS,
/*姓名*/
NAME
}
在使用是MaskingTypeEnum
时标识字段的类型
@MaskingField(type = MaskingTypeEnum.NAME)
private String cpName;
后续~~bug~~
功能大家自行研究, peace~